Figure 1.

Flowchart describing the selectionof the cohort of13,183 users of anti-Parkinsoniandrugs, 40–89 years ofage, observed between January1, 1997 and June30, 2009, identified fromthe United Kingdom's GeneralPractice Research Database (GPRD).

Ernst et al. BMC Neurology 2012 12:113   doi:10.1186/1471-2377-12-113
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